1. 07 3月, 2014 3 次提交
  2. 06 3月, 2014 5 次提交
    • H
      hyperv: Move state setting for link query · 1b07da51
      Haiyang Zhang 提交于
      It moves the state setting for query into rndis_filter_receive_response().
      All callbacks including query-complete and status-callback are synchronized
      by channel->inbound_lock. This prevents pentential race between them.
      Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      1b07da51
    • S
      net: macb: DMA-unmap full rx-buffer · 48330e08
      Soren Brinkmann 提交于
      When allocating RX buffers a fixed size is used, while freeing is based
      on actually received bytes, resulting in the following kernel warning
      when CONFIG_DMA_API_DEBUG is enabled:
       WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:1051 check_unmap+0x258/0x894()
       macb e000b000.ethernet: DMA-API: device driver frees DMA memory with different size [device address=0x000000002d170040] [map size=1536 bytes] [unmap size=60 bytes]
       Modules linked in:
       CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.14.0-rc3-xilinx-00220-g49f84081ce4f #65
       [<c001516c>] (unwind_backtrace) from [<c0011df8>] (show_stack+0x10/0x14)
       [<c0011df8>] (show_stack) from [<c03c775c>] (dump_stack+0x7c/0xc8)
       [<c03c775c>] (dump_stack) from [<c00245cc>] (warn_slowpath_common+0x60/0x84)
       [<c00245cc>] (warn_slowpath_common) from [<c0024670>] (warn_slowpath_fmt+0x2c/0x3c)
       [<c0024670>] (warn_slowpath_fmt) from [<c0227d44>] (check_unmap+0x258/0x894)
       [<c0227d44>] (check_unmap) from [<c0228588>] (debug_dma_unmap_page+0x64/0x70)
       [<c0228588>] (debug_dma_unmap_page) from [<c02ab78c>] (gem_rx+0x118/0x170)
       [<c02ab78c>] (gem_rx) from [<c02ac4d4>] (macb_poll+0x24/0x94)
       [<c02ac4d4>] (macb_poll) from [<c031222c>] (net_rx_action+0x6c/0x188)
       [<c031222c>] (net_rx_action) from [<c0028a28>] (__do_softirq+0x108/0x280)
       [<c0028a28>] (__do_softirq) from [<c0028e8c>] (irq_exit+0x84/0xf8)
       [<c0028e8c>] (irq_exit) from [<c000f360>] (handle_IRQ+0x68/0x8c)
       [<c000f360>] (handle_IRQ) from [<c0008528>] (gic_handle_irq+0x3c/0x60)
       [<c0008528>] (gic_handle_irq) from [<c0012904>] (__irq_svc+0x44/0x78)
       Exception stack(0xc056df20 to 0xc056df68)
       df20: 00000001 c0577430 00000000 c0577430 04ce8e0d 00000002 edfce238 00000000
       df40: 04e20f78 00000002 c05981f4 00000000 00000008 c056df68 c0064008 c02d7658
       df60: 20000013 ffffffff
       [<c0012904>] (__irq_svc) from [<c02d7658>] (cpuidle_enter_state+0x54/0xf8)
       [<c02d7658>] (cpuidle_enter_state) from [<c02d77dc>] (cpuidle_idle_call+0xe0/0x138)
       [<c02d77dc>] (cpuidle_idle_call) from [<c000f660>] (arch_cpu_idle+0x8/0x3c)
       [<c000f660>] (arch_cpu_idle) from [<c006bec4>] (cpu_startup_entry+0xbc/0x124)
       [<c006bec4>] (cpu_startup_entry) from [<c053daec>] (start_kernel+0x350/0x3b0)
       ---[ end trace d5fdc38641bd3a11 ]---
       Mapped at:
        [<c0227184>] debug_dma_map_page+0x48/0x11c
        [<c02ab32c>] gem_rx_refill+0x154/0x1f8
        [<c02ac7b4>] macb_open+0x270/0x3e0
        [<c03152e0>] __dev_open+0x7c/0xfc
        [<c031554c>] __dev_change_flags+0x8c/0x140
      
      Fixing this by passing the same size which is passed during mapping the
      memory to the unmap function as well.
      Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com>
      Reviewed-by: NBen Hutchings <ben@decadent.org.uk>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      48330e08
    • S
      net: macb: Check DMA mappings for error · 92030908
      Soren Brinkmann 提交于
      With CONFIG_DMA_API_DEBUG enabled the following warning is printed:
       WARNING: CPU: 0 PID: 619 at lib/dma-debug.c:1101 check_unmap+0x758/0x894()
       macb e000b000.ethernet: DMA-API: device driver failed to check map error[device address=0x000000002d171c02] [size=322 bytes] [mapped as single]
       Modules linked in:
       CPU: 0 PID: 619 Comm: udhcpc Not tainted 3.14.0-rc3-xilinx-00219-gd158fc7f #63
       [<c001516c>] (unwind_backtrace) from [<c0011df8>] (show_stack+0x10/0x14)
       [<c0011df8>] (show_stack) from [<c03c7714>] (dump_stack+0x7c/0xc8)
       [<c03c7714>] (dump_stack) from [<c00245cc>] (warn_slowpath_common+0x60/0x84)
       [<c00245cc>] (warn_slowpath_common) from [<c0024670>] (warn_slowpath_fmt+0x2c/0x3c)
       [<c0024670>] (warn_slowpath_fmt) from [<c0228244>] (check_unmap+0x758/0x894)
       [<c0228244>] (check_unmap) from [<c0228588>] (debug_dma_unmap_page+0x64/0x70)
       [<c0228588>] (debug_dma_unmap_page) from [<c02aba64>] (macb_interrupt+0x1f8/0x2dc)
       [<c02aba64>] (macb_interrupt) from [<c006c6e4>] (handle_irq_event_percpu+0x2c/0x178)
       [<c006c6e4>] (handle_irq_event_percpu) from [<c006c86c>] (handle_irq_event+0x3c/0x5c)
       [<c006c86c>] (handle_irq_event) from [<c006f548>] (handle_fasteoi_irq+0xb8/0x100)
       [<c006f548>] (handle_fasteoi_irq) from [<c006c148>] (generic_handle_irq+0x20/0x30)
       [<c006c148>] (generic_handle_irq) from [<c000f35c>] (handle_IRQ+0x64/0x8c)
       [<c000f35c>] (handle_IRQ) from [<c0008528>] (gic_handle_irq+0x3c/0x60)
       [<c0008528>] (gic_handle_irq) from [<c0012904>] (__irq_svc+0x44/0x78)
       Exception stack(0xed197f60 to 0xed197fa8)
       7f60: 00000134 60000013 bd94362e bd94362e be96b37c 00000014 fffffd72 00000122
       7f80: c000ebe4 ed196000 00000000 00000011 c032c0d8 ed197fa8 c0064008 c000ea20
       7fa0: 60000013 ffffffff
       [<c0012904>] (__irq_svc) from [<c000ea20>] (ret_fast_syscall+0x0/0x48)
       ---[ end trace 478f921d0d542d1e ]---
       Mapped at:
        [<c0227184>] debug_dma_map_page+0x48/0x11c
        [<c02aaca0>] macb_start_xmit+0x184/0x2a8
        [<c03143c0>] dev_hard_start_xmit+0x334/0x470
        [<c032c09c>] sch_direct_xmit+0x78/0x2f8
        [<c0314814>] __dev_queue_xmit+0x318/0x708
      
      due to missing checks of the dma mapping. Add the appropriate checks to fix
      this.
      Signed-off-by: NSoren Brinkmann <soren.brinkmann@xilinx.com>
      Reviewed-by: NBen Hutchings <ben@decadent.org.uk>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      92030908
    • H
      r8152: disable the ECM mode · 10c32717
      hayeswang 提交于
      There are known issues for switching the drivers between ECM mode and
      vendor mode. The interrup transfer may become abnormal. The hardware
      may have the opportunity to die if you change the configuration without
      unloading the current driver first, because all the control transfers
      of the current driver would fail after the command of switching the
      configuration.
      
      Although to use the ecm driver and vendor driver independently is fine,
      it may have problems to change the driver from one to the other by
      switching the configuration. Additionally, now the vendor mode driver
      is more powerful than the ECM driver. Thus, disable the ECM mode driver,
      and let r8152 to set the configuration to vendor mode and reset the
      device automatically.
      Signed-off-by: NHayes Wang <hayeswang@realtek.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      10c32717
    • G
      net/mlx4: Support shutdown() interface · 367d56f7
      Gavin Shan 提交于
      In kexec scenario, we failed to load the mlx4 driver in the
      second kernel because the ownership bit was hold by the first
      kernel without release correctly.
      
      The patch adds shutdown() interface so that the ownership can
      be released correctly in the first kernel. It also helps avoiding
      EEH error happened during boot stage of the second kernel because
      of undesired traffic, which can't be handled by hardware during
      that stage on Power platform.
      Signed-off-by: NGavin Shan <shangw@linux.vnet.ibm.com>
      Tested-by: NWei Yang <weiyang@linux.vnet.ibm.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      367d56f7
  3. 04 3月, 2014 11 次提交
  4. 03 3月, 2014 10 次提交
  5. 02 3月, 2014 3 次提交
  6. 01 3月, 2014 3 次提交
  7. 28 2月, 2014 5 次提交